Origin and Etymology of overline

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noun

Definition of overline

1:a printed line usually underlined and of a smaller size or different typeface than the headline proper run above a headline and designed to introduce or identify the matter of the story or provoke to read on

2:the title or explanatory matter above a picture or cartoon in a newspaper or periodical

3:an insertion, correction, or alteration made above the printed or manuscript line it applies to —distinquished from underline

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